I find it pretty funny that the article opens with "so we don't need all that SFINAE junk anymore" and then proceeds to spend pages upon pages explaining the ot

I find it pretty funny that the article opens with "so we don't need all that SFINAE junk anymore" and then proceeds to spend pages upon pages explaining the other junk we need in its place :-) I know, apples to oranges, the SFINAE bit was about concepts, not iterators. Still, pretty funny.